The GoFlex series is a set of external hard drives with interchangeable interface adapters that allow their hard drives to switch between different interfaces. Existing adapters include USB 3.0, Firewire, and eSATA. This new adapter offers Thunderbolt support for existing portable GoFlex customers. One reader notes that the interface is simply an SATA interface, so this adapter could be used with any bare 2.5" SATA hard drive.

Seagate first announced the Thunderbolt adapters at CES and is also planning on offering a desktop version of the adapter for 199 in February.